They Don't.
Use a palmer stabilizer reg and an anti-siphoned tank. Do not use an anti-siphoned tank with a remote. It basically becomes like a normal tank. A palmers stabilizer and a anti-siphoned tank can get into the price of a steel 45/3,000 psi tank and a nice regulator. I suggest getting a nitro tank. You will be better off.
A palmers stabilizer runs about $80. A steel tank is $75. A fiber tank with low output pressure(450psi) from ACI is $90. Add a drop forward, about $30. And your set.ACI Fiber Tank, $90LAPCO Drop Forward, $25
Hope this helps. I suggest saving up and getting a better tank and inline regulator later. Fiber tanks of good size get pricey. The 45cu tank will not last long at all. I would get rid of the 45 and get a 68cu tank when you can. Sure with the CO2 you can play longer without needing constant refills but a nitro setup is better for such a nice gun.

It is kinda funny looking back...I think it was an Oring, may have just been Liquid CO2 (even with antisiphon, 6 chamber expansion etc.) I don't really remember, just happy that Bob took care of it. Needless to say, I bought a C/A tank right after.

Of course at the time I was 2min into the second game of my first tournament(2man). Lucky for me, one of the Refs loaned me his Bushmaster to finish the day (we took 2nd)